Home / 20,936.45-28,892.42-11,376.41

Finding the Fourth Proportional to 20,936.45, 28,892.42 and 11,376.41

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Solution

The fourth proportional to 20,936.45, 28,892.42 and 11,376.41 is: 15,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.45 : 28,892.42 = 11,376.41 : x
  2. Step 2: Convert to fraction form
    20,936.45/28,892.42 = 11,376.41/x
  3. Step 3: Cross multiply
    20,936.45x = 28,892.42 × 11,376.41
  4. Step 4: Simplify right side
    20,936.45x = 328,692,015.81
  5. Step 5: Solve for x
    x = 328,692,015.81/20,936.45
  6. Step 6: Final answer
    x = 15,699.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.